boualy



I.. F. BONALY.

sPmNmess norm LocK AND LATCH.

l APPLICATION FILED APR. I?. I9I9. I 1,326,173. Patented Dec.' 30,1919.

2 SHEETS-SHEET l.

Ailllll W1 TINESs 35 3f INVENTOR.

.- L. F. BONALY.

SPRINGLESS DOOR LOCK AND LATCH.

APPLICATION F1121) A.PR.11. 1919.

Patented 11%.3o,1919.

2 SHEETS-SHEET 2.

WITNESS: IN VEN TOR.

s .aai-

` srnruennss `noon LOCKAND LATCH.

To all'whom it may concern:

Beit known that l, Louis F. BONALY, a citizen Vof the United States, residing at Leavenworth, in theA county of Leavenworth and State of Kansas, have invented certain new and useful Improvements in Springless Door Locks and Latches, of which the following is a specification.

This invention' relates to springless door locks and latches, fand -is-designed more especially as an improvement in the doo-r lock onwhichPatent. No. 1,161,982 was issued onthe tweiity-irst day of December, 1915. Theflobject of' the present invention is to generally improve the construction of said patented lock-and the efhciency of itsv operation and make-it-niore difcultof unlocking operation by any means other than the approj'oriatev key. 'To this end the invention consists in certain 'novel and useful -features of construction and organization'of parts ashereinaterl described and claimed;l and in order that it may be fully understood: reference vis to@ behad to the accompanying drawing, inwhich:` 1, 'y

Figure 1", isa side" viewof a lock embodying my"u invention with: the face plate omitted to disclose the internalconstruction andi' arrangement of therparts. 1 Fig. 2, is a vertical.` section on theline 'I1- Hof Fig: 1. M 1

'Fig 3,`=is a vertical section on the line III-III ot Fig. 1'. y

T Figf- 4, 'is aragmentary section on the "samev line'4 as Fig.V 3, but looking in the opposite direction. Y

horizontal section taken on the11neV-=V pf Fig. 1. L

`Figi 6,-iis a. fragmentary view corresponding to Fig; 1, but showingthe tumbler locking catch sectioned land the tumbler advanced tolock the bolt in Aits advanced `po- "sitontA 1 Fig. 7, is detail perspective view of a tumbler. j 1

In the said drawing, 1 indicates a. rectangular lock'ca'sing of conventional form and provided with a key-hole 2, a knob operated shaft ,3,` and a bolt comprising; a latchpiece 4"-eXtending slidingly4 through the outeredge of thecasing, and an arm 5, lthe rear end of the bolt being ofV yoke form and 'having outwardly facing' shoulders 6.

The yoke end of the .bolt slides on thebot- Speccatonof Letters iatent. Patented Ue, 30, 1919,.

Application ied April 17, 1919. Serial No. 290,713.

tom. of the casing and against the underside of a post 7, which `post and a post 8,

are adapted to receive the screws by whichV the removable face plate 9 of the casing, is secured in position. rlhe post 7 may be utilized as a stop for a weight hereinafter referred to, and the post 48, in conjunction with the inner edge of the casing, as a `guide for said weight, and said post 8 in conjunction with a post 19 and the outer edge ofythe casing, constitute means for guiding a weight 11, also adapted for vertical reciprocatory .moveineiitw The weight 11 rests upon a rocker lever 12 pivotedf at 13 intermediate its endsand bearing atits outer` end against the inner side of the bolt arni 5 ,to hol-d the latter, under the pressureY of the said weight 11, slidingly advanced, and tol retract the bolt the knob shait 31's provided with: a double crank 14 to apply pressure according to the direction the knob is-turned, on the opposing bolt shoulder 6, this retraction of the bolt effecting the operation of the rocker lever and the lifting of the weight 11. It will thus be seen that .by the construction thus Vfait' describedj the weight 11- is utilized tomaintain thebolt Vadvanced, and that Vthe latter may be retizacted not o nly by operation ofone of; `the knobs but :will also retract when the @door )closed by engagement of the beveled side of the latch piece 4 with the bolt socket (not shown). adapted for the reception of said latch; piece.

A shouldered pivot post `lv'within the casing is located vertically above thel post 10,A and fitting on said post Vand extending `between the upper edge of the casing and the post 10 isf a bar 16, ithe lower end of said bar being flat and littingy squarely `again-st the post 10 .so as toi-be incapable of pivotal operation, the removal plate 9 of the casing guarding against dislocation of' said bar.

Pivotally suspended from said. pivot post 15 anditting snugly between the bar 16 and the back plate of the casingisa tumbler actuatedI locking arm 17. The bar 16' is pr'ovided with a recess 17a in its rear side,'and projecting therein and pivoted to a pin` 18 carried by said bar is a` tumbler-controlling latch 19, the saine having a short arm 20 projecting from its free or rear endinto a vertical slot 21 in a. vertical bar 22 projecting from a plate-Qfastened in any suitable manner to the inner side of the back wall of the casing and serving to thicken and reinforce the wall around the key-hole, and said latch is provided in its lower edge with a segmental recess 2-1, and at its upper edge with a horizontal lug underlying and engaged by a horizontal arm 26 projecting from a vertical extension 27 of the weight 28 hereinbefore mentioned but not identified, said weight normally resting on post 7 and fitting snugly between post 8 and one edge of the casing. The body of the weight is shown as extending upward beyond the lower end of the key-hole and consequently is provided with a segmental recess 29 in its upper edge to accommodate the turning of the key employed in connection with the lock, it being understood that when the key is turned, it must by engagement with the recessed edge of the catch 19, pivotally raise the latter and hence lift the weight, and that the latter when unresisted returns the latch to its normal position.

Arranged against the rear side of the latch is a plurality of tumblers 30, pivoted at one end as at 31 to the lower end of swing arm 17 pivotall'y suspended from the pivot post 15 -between the back of the casing and the bar 16, and said tumblers are provided at their opposite ends with arms 33 extending slidingly through the slot 21 in bar 22 and also into a vertical slot 3l in the vertical arm 27 of the weight 28. The arms 33 are provided in their lower edges with pairs of notches 35 and 36 and in the normal position of the tumblers the notches 35 engage the bar 22 at the lower edge of the slot thereof, and thus normally lock the swing arm 17 in vertical position. The tumblers are provided with segmental recesses 37 in their lower edges and with notches 38 opening into said recessed edges, and when the key is turned a notch or ward in the bit of the key receives the recessed edges of the tumblers and raises the same pivotally high enough to disengage notches 35 from the bar 22, and then the ward of the key engages the notches 38, while retaining the tumblers elevated and disengaged from the` bar 22, so that continued movement of the key shall move the tumblers to the right and thus swing the swing arm 17 in the same direction until the lower end enters a notch 39 in the upper left hand corner of the weight 11, and as this occurs the tumblers swing down until their notches 36 engage the bar 32 and thus lock the swing arm in the position mentioned and hence the weight 11 in its depressed position. This positioning of the parts mentioned of course prevents pivotal action of the rocker bar 12 and hence locks the bol advanced.

- Reverse operation of the key results in relevating the catch and then the .tumblers until notches 36 of arms 33 are out of end gagement with the bar 22, and then the en-` gagement of the key with the notches 38 moves the tumblers to the left and hence withdraws the locking swing arm 17 to its original position and leaves the weight 11 free to be ,moved upward, the release of the tumblers and the catch by the-key permitting the former to drop down until notches 35 are engaged again with the bar 22 to lock the swing arm 32 in unlocked position, and the weight 28 to drop and force Vthe catch down upon the tumbler to guard against accidental upward movement thereof.'

It will be seen that if the ward of the key is too shallow for the depth of recess 37 ofthe tumbler, or too deep to permit the notched portion of the latter to drop into the ward, it will be impossible to eect movement of the locking'arm 32, it being noted that as the tumbler is in duplicate, thev key must be formed to operate both simultaneously to effect adjustmentk of the locking arm. Multiplication of the tumblers of course makes the lock more dimcult to pick.

From the above description it will he apparent that l have `produced a springless door lock and latch which possesses all of the features of advantage pointed out, and while I have illustrated the preferred embodiment of the same Ireserve the right to make all changes which fall (within the spirit and scope of the appended claims.

1. In a combined door lock and latch, a casing, a reciprocatory bolt therein, knob actuated means for retracting the bolt, a rocker lever engaging the bolt, a vertically movable weight .adaptedin its downward movement for operating the rocker lever to advance the bolt, alocking arm movable independently of said weight, andkey casing, a reciprocatory bolt therein, knob actuated means for retracting the bolt, a rocker lever engaging the bolt, a vertically movable weight adapted in its downward movement for operating the rocker lever to advance the bolt, a locking arm movable independently of said weight, keyfactuated means for disposing said arm in the path of upward movement of said; weight after the latter has assumed its most depressed position, to lock the bolt in its advanced position, and means to lock said locking arm in said last named position.

3. In a door lock, a bolt, yielding means for holding the bolt advanced, knob operated means to retract. the bolt, a swing arm, a tumbler pivotally connected to the swing ies i so

arm and adapted for actuation by a key to dispose the swing arm in position to lock the said yielding means against unlocking movement and for reverse actuation by such key to return the swing arm to normal position, and means for locking the tumbler in either of its said positions.

4. In a door lock, a bolt, yielding means for holding the bolt advanced, knob operated means to retract the bolt, a swing arm, a tumbler pivotally connected to the swing arm and adapted for actuation by a key to dispose the swing arm in position to lock the said yielding means against unlocking movement and for reverse actuation by such key to return the swing arm to normal position, a slotted bar in the casing, and an arm projecting from the tumbler through said slotted bar and provided in its lower edge with a pair of notches, one for engagement with said bar when the tumbler is advanced,

and the other for engagement with said bar when the tumbler is retracted.

5. In a door lock, a bolt, yieldin means or'holding the bolt advanced, kno operated means to retract the bolt, a swing arm, a tumbler lpivotally connected to the swing arm and adapted for actuation by a key to dispose the swing arm in position to lock the said yielding means against unlocking movement and for reverse actuation by such key to return the swing arm to normal position, a pivoted latch having a lug overlying and engaging the tumbler, a slotted bar receiving the free ends of the tumbler and latch, the former having notches in its lower edge, and a weight engaging the latch for holding the same depressed and the tumbler with either of its notches in engagement with the said bar.

In testimony whereof I afx my signature.

LOUIS F. BONALY. 

